Oxidation dyeing process using a substrate bearing at least one oxidation dye and an aqueous composition

Abstract

The present invention relates to the field of dyeing keratin fibers and more particularly to the field of hair dyeing. The present invention relates to a process for the oxidation dyeing of keratin fibers, in particular human keratin fibers such as the hair, which consists in using on the said fibers i) a substrate comprising on its surface one or more oxidation dyes, and ii) an aqueous composition comprising one or more oxidizing agents. The present invention also relates to a process for preparing the said substrate thus pretreated.

Claims

1. A process for the oxidation dyeing of keratin fibers, the process comprising applying to the fibers: i) a substrate comprising on its surface a dye composition comprising at least one oxidation dye, wherein the dye composition is printed onto the surface of the substrate; and then ii) an aqueous composition comprising at least one chemical oxidizing agent and at least one alkaline agent.

2. The process according to claim 1, wherein the substrate is an element in sheet form.

3. The process according to claim 2, wherein the element in sheet form is made of plastic material, thermoplastic, paper, metal, aluminum, woven or nonwoven non-absorbent fibers, cellulose or derivatives thereof, or polyamide 6,6.

4. The process according to claim 2, wherein the element in sheet form comprises an adhesive layer on which are deposited at least one oxidation dye.

5. The process according to claim 1, wherein the at least one oxidation dye is chosen from oxidation bases and optionally comprises at least one coupler.

6. The process according to claim 5, wherein the oxidation bases are chosen from para-phenylenediamines, bis(phenyl)alkylenediamines, para-aminophenols, ortho-aminophenols, heterocyclic bases, 1-methyl-2,5-diaminobenzene, 1-hydroxyethyl-4,5-diaminopyrazole, 2,3-diaminodihydroxypyrazolone, the addition salts thereof, or mixtures thereof.

7. The process according to claim 5, wherein the couplers are chosen from meta-phenylenediamines, meta-aminophenols, meta-diphenols, naphthalene-based couplers, heterocyclic couplers, resorcinol, 2-methylresorcinol, 5-N-(-hydroxyethyl)amino-2-methylphenol, 2-methyl-5-aminophenol, 1--hydroxyethyloxy-2,4-diaminobenzene dihydrochloride, 3-aminophenol, (5-N-hydroxyethyl)amino-o-cresol, 5-amino-ortho-cresol and 1--hydroxyethyloxy-2,4-diaminobenzene dihydrochloride, addition salts thereof, or mixtures thereof.

8. The process according to claim 1, wherein the at least one oxidation dye is present on a part of the surface of the substrate and represent patterns having the desired form.

9. The process according to claim 1, wherein the substrate comprises, on the face opposite the face bearing the at least one oxidation dye, a copy of at least one pattern.

10. The process according to claim 1, wherein the surface of the substrate comprises, prior to the deposition of the at least one oxidation dye, at least one pattern.

11. The process according to claim 1, wherein the substrate is transparent.

12. The process according to claim 11, wherein the substrate further comprises on its surface at least one alkaline agent.

13. The process according to claim 1, wherein the aqueous composition comprises at least one oxidizing agent.

14. The process according to claim 1, wherein the aqueous composition further comprises at least one coloring agent or coupler.

15. The process according to claim 1, comprising preparing the substrate by depositing, via a printing method chosen from a screen printing process or a printing process using an inkjet printer, a composition containing at least one oxidation dye onto the surface of the substrate.

16. An element in sheet form, pretreated on a surface with a composition comprising at least one oxidation dye and at least one layer of at least one non-absorbing material; wherein: the composition is printed on the surface of the element in sheet form, and the element in sheet form is chosen from a plastic sheet covered with a layer of paper having a thickness of less than about 50 m or a layer of hydrophilic material having a thickness ranging from about 5 m to about 200 m.

17. The element in sheet form according to claim 16, wherein the element is sheet form is a microalveolar sheet wherein the holes are spaced apart from each other by a plastic material.

Description

EXAMPLE

Example 1

(1) An inkjet printer is used. The cartridge is filled with a dye composition containing 30% by weight of 1-methyl-2,5-diaminobenzene. The dye composition also contains an alkaline agent in an amount such that the pH of the composition is equal to 9.

(2) A pattern is printed on a plastic sheet, and the sheet is then reprinted so that its surface is treated with the dye composition.

(3) The amount of the dye composition is 3 mg/cm.sup.2 and 1 mg/cm.sup.2 after drying.

(4) The plastic sheet is then cut into a rectangle 18 cm long and 5 cm wide.

(5) The plastic sheet is protected with a second plastic sheet.

(6) An alkaline oxidizing aqueous composition is prepared by mixing weight-for-weight, at the time of use, the composition sold under the name Oxydant Riche INOA 30 volumes and the alkaline composition based on 10% by weight of monoethanolamine.

(7) A hairstylist isolates a lock of his model's bleached hair using the technique of plaiting. He places the lock of hair on an aluminium foil. Next, he pastes the hair by applying the oxidizing aqueous composition to the lock with a brush, in an amount of 3 g. Next, he places the sheet prepared previously and using the edges of the aluminium foil to attach the plastic sheet.

(8) The assembly is left to stand for 30 minutes. The two sheets are then removed and the lock is rinsed thoroughly. A shampoo is applied and the lock is then dried.

(9) A coloured pattern (brown colour) is very clearly observed.

Example 2

(10) The procedure of Example 2 is identical to that of Example 1, except that the alkaline oxidizing aqueous composition also comprises 1% by weight of 1--hydroxyethyloxy-2,4-diaminobenzene dihydrochloride.

(11) A blue coloured pattern is very clearly observed.

Example 3

(12) 1. Compositions Tested

(13) Compositions (A) to (F) below are prepared from the ingredients indicated below.

(14) TABLE-US-00001 Composition A 1-Methyl-2,5-diaminobenzene 12 g (50% AM) Water qs 100 g

(15) TABLE-US-00002 Composition B 1--Hydroxyethyloxy-2,4- 12.5 g diaminobenzene dihydrochloride Ethanol 30 g 2-Amino-2-methyl-1-propanol qs pH = 10.3 Water qs 100 g

(16) TABLE-US-00003 Composition C Resorcinol 5.5 g Ethanol 10 g Water qs 100 g

(17) TABLE-US-00004 Composition D 5(N-Hydroxyethyl)amino-o-cresol 8.9 Ethanol 30 g 2-Amino-2-methyl-1-propanol qs pH = 10.3 Water qs 100 g

(18) TABLE-US-00005 Composition E para-Aminophenol 5.4 g Ethanol 40 g 2-Amino-2-methyl-1-propanol qs pH = 10.3 Water qs 100 g

(19) TABLE-US-00006 Composition F 1-Methyl-2,5-diaminobenzene 12 g (50% AM) Water qs 100 g

(20) 2. Procedure

(21) Compositions (A) to (F) are placed in the six compartments of an inkjet printer (Gatocopy).

(22) Printing is then performed on a 5-square (3 cm3 cm) inkjet printer transparency, selectively addressing the printer so that the following is printed on a square: Square 1: composition (A)/composition (B) in a 50/50 weight ratio Square 2: Composition (A)/Composition (C) in a 50/50 weight ratio Square 3: Composition (A)/Composition (D) in a 50/50 weight ratio Square 4: Composition (E)/Composition (D) in a 50/50 weight ratio Square 5: Composition (F)/Composition (A)/Composition (B) in a 50/25/25 weight ratio

(23) After printing, the transparency appears tinted in the five printed squares.

(24) Five locks of white hairs are placed on, spread out so as to cover the five squares.

(25) An alkaline oxidizing aqueous composition is prepared from a weight-for-weight mixture, at the time of use, of a composition sold under the name Oxydant Riche INOA 30 volumes and of an alkaline composition based on 10% by weight of monoethanolamine.

(26) The oxidizing aqueous composition is applied to each of the five locks of hair, in an amount of 8 g per lock. The assembly is left to stand for 30 minutes. The locks are removed from the transparency.

(27) The locks are rinsed and then washed, and the formation of a strip is observed on each of the locks:

(28) TABLE-US-00007 Colour of the locks Lock 1 Midnight blue Lock 2 Green-brown Lock 3 Violet-brown Lock 4 Light orange Lock 5 Mid-blue

(29) These patterns withstand washing well, especially after being washed six times.

Example 4

(30) 1. Compositions Tested

(31) Compositions (G) to (J) below are prepared from the ingredients indicated below.

(32) TABLE-US-00008 Composition G 1-Methyl-2,5-diaminobenzene 12 g (50% AM) 1--Hydroxyethyloxy-2,4- 12.05 g diaminobenzene dihydrochloride Ethanol 20 g 2-Amino-2-methyl-1-propanol qs pH = 10.3 Water qs 100 g

(33) Composition (H) is especially prepared from compositions (H) and (H) below:

(34) TABLE-US-00009 Composition H 1-Methyl-2,5-diaminobenzene 12.5 g (50% AM) Resorcinol 5.5 Ethanol 10 g Water qs 70 g

(35) TABLE-US-00010 Composition H Carbomer 980 1.5 g 2-Amino-2-methyl-1-propanol qs pH = 8 Water qs 30 g

(36) TABLE-US-00011 Composition I para-Aminophenol 5.4 g 5(N-Hydroxyethyl)amino-o-cresol 8.9 g (Dragon Chemicals) Ethanol 30 g 2-Amino-2-methyl-1-propanol qs pH = 10.3 Water qs 100 g

(37) 2. Procedure

(38) Compositions (G) to (I) are placed in the three compartments of an inkjet printer (Gatocopy), adjusting the ink feed so that it delivers 16 g/cm.sup.2.

(39) A square (3 cm3 cm) is then printed on a sheet of ordinary paper of Kraft type for each composition.

(40) After printing, the sheets of paper appear slightly tinted in the region of the printed squares.

(41) The locks of hair (1 gram) are positioned, spread out on each sheet, on the printed squares.

(42) An alkaline oxidizing aqueous composition is prepared from a weight-for-weight mixture, at the time of use, of a composition sold under the name Oxydant Riche INOA 30 volumes and of an alkaline composition based on 10% by weight of monoethanolamine.

(43) The oxidizing aqueous composition is applied to each of the locks of hair, in an amount of 8 g per lock. The assembly is left to stand for 30 minutes. The locks are removed from the sheets.

(44) The locks are rinsed and then washed, and the formation of a coloured strip is observed on each of the locks.